package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);
        System.out.println(employee.toString());

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //这里把前端传来的密码进行加密
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @return
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
//        对象属性拷贝，原数据，目标数据
        BeanUtils.copyProperties(employeeDTO, employee);
//        设置账号状态，默认为正常为1，不正常为0
        employee.setStatus(StatusConstant.ENABLE);
//        设置默认密码
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
////        设置账号的创建时间和修改时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//
////        设置账号的创建人id
////        设置账号的修改人id
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setCreateUser(BaseContext.getCurrentId());


        employeeMapper.insert(employee);

    }

    /**
     * 员工分页查询
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQueue(EmployeePageQueryDTO employeePageQueryDTO) {
//        开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
//        开始查询
        Page<Employee> page = employeeMapper.pageQueue(employeePageQueryDTO);
//        将数据封装成PageResult进行返回
        long total = page.getTotal();
        List<Employee> records = page.getResult();
        return new PageResult(total,records);
    }

    /**
     *  员工启用或禁用
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Employee employee = new Employee();
        employee.setId(id);
        employee.setStatus(status);
        employeeMapper.update(employee);

    }

    /**
     * 根据id查询员工信息
     * @param id
     */
    @Override
    public Employee getById(Long id) {

        Employee employee = employeeMapper.getById(id);
//        这是为了修改的时候，其他人查询到密码，进一步加密
        employee.setPassword("******");
        return employee;
    }

    /**
     * 修改员工信息方法
     */

    public void update(EmployeeDTO employeeDTO) {
//        我们之前写过一个Update方法，不过泛型是Employee，这里我们的是EmployeeDTO，所以我们可以进行拷贝一下
        Employee employee = new Employee();
//        拷贝方法和工具类
        BeanUtils.copyProperties(employeeDTO,employee);
////        设置修改时间
//        employee.setUpdateTime(LocalDateTime.now());
////        设置修改人id
//        employee.setUpdateUser(BaseContext.getCurrentId());
//        这里进行修改
        employeeMapper.update(employee);


    }
}
